King West Pharmacy in Hamilton, Ontario came under scrutiny and the pharmacist of record there was arrested after 11 people died after being prescribed what turned out to be counterfeit versions of Norvasc, a Pfizer heart medication. The pills were actually made of talcum powder.

How: Patient brought pills to different pharmacist because they looked different, who then sent them on the manufacturer where they were found to be counterfeit.

Additional details: Of the 11 people who died after receiving fake Norvasc from the King West Pharmacy, the coroner determined that 4 of the deaths were classified as undetermined with unauthorized medication substitution as the possible cause.